From 3549b43aab6062fddfa38bd1d4577ea2bccf9cf6 Mon Sep 17 00:00:00 2001
From: Tallapragada Kalyan <ktallapr@codeaurora.org>
Date: Mon, 6 Feb 2017 16:34:42 +0530
Subject: [PATCH] qcacmn: Drop pkts with same source MAC addr as BSS peer

Drop packets received with source mac address which match
BSS-peer MAC address

Change-Id: Ia89bdef8c747856e6eb0ade5946f2109aa6ee106
CRs-Fixed: 2003187
---
 dp/wifi3.0/dp_rx.c     | 10 ++++++++++
 dp/wifi3.0/dp_rx_err.c | 12 ++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/dp/wifi3.0/dp_rx.c b/dp/wifi3.0/dp_rx.c
index d7b0d3f8e1e5..9a1c71b1c029 100644
--- a/dp/wifi3.0/dp_rx.c
+++ b/dp/wifi3.0/dp_rx.c
@@ -352,6 +352,16 @@ done:
 				continue;
 			}
 
+			if (qdf_unlikely(peer->bss_peer)) {
+				QDF_TRACE(QDF_MODULE_ID_DP,
+					QDF_TRACE_LEVEL_INFO,
+					FL("received pkt with same src MAC"));
+
+				/* Drop & free packet */
+				qdf_nbuf_free(nbuf);
+				/* Statistics */
+				continue;
+			}
 			/*
 			 * HW structures call this L3 header padding --
 			 * even though this is actually the offset from
diff --git a/dp/wifi3.0/dp_rx_err.c b/dp/wifi3.0/dp_rx_err.c
index f88832195769..d413eb733859 100644
--- a/dp/wifi3.0/dp_rx_err.c
+++ b/dp/wifi3.0/dp_rx_err.c
@@ -335,6 +335,17 @@ dp_rx_null_q_desc_handle(struct dp_soc *soc, void *ring_desc,
 		qdf_nbuf_data(nbuf), 128, false);
 #endif /* NAPIER_EMULATION */
 
+	if (qdf_unlikely(peer->bss_peer)) {
+		QDF_TRACE(QDF_MODULE_ID_DP,
+				QDF_TRACE_LEVEL_INFO,
+				FL("received pkt with same src MAC"));
+
+		/* Drop & free packet */
+		qdf_nbuf_free(nbuf);
+		/* Statistics */
+		goto fail;
+	}
+
 	pdev0 = soc->pdev_list[0];/* Hard code 0th elem */
 
 	if (pdev0) {
@@ -354,6 +365,7 @@ dp_rx_null_q_desc_handle(struct dp_soc *soc, void *ring_desc,
 			FL("INVALID pdev %p"), pdev0);
 	}
 
+fail:
 	dp_rx_add_to_free_desc_list(head, tail, rx_desc);
 
 	return rx_bufs_used;